Take a walk through ³The Door of No Return,² then peruse Malcolm X's Quran and diary, just before reading President Lincoln¹s letter guaranteeing
Frederick Douglass's safety. These and over 200 artifacts, reports MSNBC.com, are highlights of "America I AM: The African American Imprint,"
which opens at the National Constitution Center in Philadelphia on January 15, the birthday of Martin Luther King Jr. The exhibit takes you from every
time period of U.S. history, and is expected to travel to nine more cities over the next four years.